Massachusetts Plumbers Journeyman Practice Exam

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Prepare for the Massachusetts Plumbers Journeyman Exam with confidence. Engage with interactive quizzes and challenging questions designed to enhance your knowledge and understanding. Equip yourself before the big day!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What minimum water seal must floor/trough drains provide?

Two inches
Three inches
Four inches
Five inches

The correct answer is: Two inches

The minimum water seal that floor and trough drains must provide is two inches. This water seal acts as a barrier, preventing sewer gases from entering the living space. The two-inch water seal is a standard requirement in plumbing codes, ensuring adequate protection against odors and harmful gases that could be emitted from the drainage system. Using a water seal of less than two inches could increase the risk of sewer gas escaping into the occupied areas, which could pose health hazards. Therefore, the two-inch requirement is crucial for maintaining a safe and sanitary environment in buildings where floor and trough drains are installed.